Note 5 - Stockholders' Equity (Detail) (USD $)	1 Months Ended	3 Months Ended		141 Months Ended		3 Months Ended		0 Months Ended
	Jan. 31, 2013	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Stock Options [Member]	Mar. 31, 2012 Stock Options [Member]	Jan. 17, 2013 Series B Warrants [Member]	Dec. 31, 2012 Series B Warrants [Member]
Stock Issued During Period, Shares, New Issues (in Shares)	1,766,667
Proceeds from Warrant Exercises	$ 1,060,000
Share-based Compensation		265,825	81,576	6,935,640		47,274	81,576
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized						224,627
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition						2 years
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)								0.60	0.75
(in Shares)		1,766,667						1,766,667
Class of Warrant or Right, Outstanding (in Shares)		9,458,892		9,458,892	11,225,559			1,166,667
Other General and Administrative Expense		$ 218,551